EP 1114924 A3 20020109 - Diesel engine exhaust gas recirculation (EGR) system and method

Title (en)

Diesel engine exhaust gas recirculation (EGR) system and method

Title (de)

Vorrichtung und Verfahren zur Rückführung von Abgas für Dieselbrennkraftmaschinen

Title (fr)

Système et procédé de recirculation de gaz d'échappement pour moteur diesel

Publication

EP 1114924 A3 20020109 (EN)

Application

EP 01200002 A 20010103

Priority

US 17453200 P 20000105
US 73906000 A 20001218

Abstract (en)

[origin: EP1114924A2] Apparatus for and method of exhaust gas recirculation in an internal combustion engine that operates with charge air boost. An EGR valve has an inlet port communicated to the engine exhaust system upstream of a throttle valve in the tailpipe and an outlet port communicated to the engine intake system. The throttle valve is controlled to selectively restrict exhaust gas flow through the tailpipe so as to maintain the difference between pressure at the EGR valve inlet and pressure at the EGR valve outlet substantially unaffected by changes in pressure in the intake system and in the exhaust system. The invention is particularly suited for a turbocharged diesel engine. <IMAGE>

IPC 1-7

F02D 21/08

IPC 8 full level

F02D 21/08 (2006.01); F02D 9/04 (2006.01); F02D 9/10 (2006.01); F02D 11/08 (2006.01); F02M 25/07 (2006.01)

CPC (source: EP US)

F02D 21/08 (2013.01 - EP US); F02M 26/47 (2016.02 - EP US); F02M 26/57 (2016.02 - EP US); F02D 9/04 (2013.01 - EP US); F02D 9/10 (2013.01 - EP US); F02D 11/08 (2013.01 - EP US); F02M 26/07 (2016.02 - EP US); F02M 26/10 (2016.02 - EP US); F02M 26/27 (2016.02 - EP US); F02M 26/48 (2016.02 - EP US)

Citation (search report)

[XA] US 5937650 A 19990817 - ARNOLD STEVEN DON [US]
[A] DE 3237337 A1 19830428 - LIST HANS [AT]
[A] EP 0531277 A2 19930310 - AVL VERBRENNUNGSKRAFT MESSTECH [AT]
[X] PATENT ABSTRACTS OF JAPAN vol. 1996, no. 02 29 February 1996 (1996-02-29)
[A] PATENT ABSTRACTS OF JAPAN vol. 1997, no. 10 31 October 1997 (1997-10-31)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

DOCDB simple family (publication)

EP 1114924 A2 20010711; EP 1114924 A3 20020109; EP 1114924 B1 20030827; DE 60100629 D1 20031002; DE 60100629 T2 20040617; US 2001029935 A1 20011018; US 6470866 B2 20021029

DOCDB simple family (application)

EP 01200002 A 20010103; DE 60100629 T 20010103; US 73906000 A 20001218